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They aren’t in all markets but there are heat pumps that use CO2 as the refrigerant that can make quite-high output water temps. They’re often used for domestic
by chrislund 4y ago
They aren’t in all markets but there are heat pumps that use CO2 as the refrigerant that can make quite-high output water temps. They’re often used for domestic hot water. I haven’t looked too deeply in to them but IIRC they have COPs around 3–4. Sanden is one manufacturer, Mitsubishi and their Ecodan line is another.